Aquifers are bodies of water located underground. They may be enclosed within surrounding rock, which is called a confined aquifer, or exist within a layer of water-saturated gravel or sand, which is called an unconfined aquifer. Both kinds of aquifers are used for irrigation, industrial applicat...
1.infiltrate v.渗透 2.aquifer n.含水土层, 蓄水层 3.unconfined aquifer 非承压含水层 无压含水层 4.confined aquifer 自流含水层 承压含水层 5.recharge area 补给区 6.water table n. 地下水面(门窗泻水台)7.vadose zone 渗流区 8.aquitard 半透水层 弱含水层 9.aquiclude n.含水土...
Unconfined and Deep Confined Aquifer Interactions Evaluated by Isotopic Techniques San Luis Valley, ColoradoO compositions and distributions, suggest that mountain front recharge is the principle recharge mechanism for the upper and lower confined aquifers with travel times in the northern valley of more ...
Mixed confined and unconfined groundwater flow occurs in a bounded initially dry aquifer when the hydraulic head at the side boundary suddenly rises above the elevation of the aquifer's top boundary. The flow problem as modelled by the Boussinesq equation is non-trivial because of the involvement...
Transient confined-unconfined flow conversion caused by pumping in a confined aquifer (i.e., piezometric head drops below the top confined layer) is complicated, partly due to different hydraulic properties between confined and unconfined regions. For understanding mechanism of the transient confined-...
A three dimensional finite element model for fluid flow and transport in confined or unconfined aquifer : F. Jacob, J. M. Crolet, P. Lesaint & J. Mania, in: Water pollution III: modeling, measuring and prediction, ed L.C. Wrobel & P. Latinopoulos, (Computational Mechanics Publications)...
The complex overlapping fan network and cross-cutting IVF in the domain area results in an aquifer system that, at shallow depths, is unconfined (and sometimes perched) or semi-confined and increasingly confined with depth (Fleckenstein et al.2006; Liu2014; Niswonger and Fogg2008). Groundwater...
The paper presents a data base of hydrochemical and hydraulic groundwater measurements of a younger Pleistocene multilayered, unconfined/confined aquifer system in NE Germany. The Institute of Landscape Hydrology of the Leibniz Centre for Agricultural Landscape Research (ZALF) e. V...
Mixed confined and unconfined groundwater flow occurs in a bounded initially dry aquifer when the hydraulic head at the side boundary suddenly rises above the elevation of the aquifer's top boundary. The flow problem as modelled by the Boussinesq equation is non-trivial because of the involvement...
Mixed confined and unconfined groundwater flow occurs in a bounded initially dry aquifer when the hydraulic head at the side boundary suddenly rises above the elevation of the aquifer's top boundary. The flow problem is modelled by the Boussinesq equation and involves two moving boundaries. Here,...